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解题方法
1 . 若函数
,
,对于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9aabf628775d5ff1a4668d4ac8af7d8.png)
,
,使
,则a的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5397ee1eb6d157f6ec1e7a878f8d16e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db719f78be99ee3fac8c1cdb96e2eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9aabf628775d5ff1a4668d4ac8af7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa66623cf54b42d6d12be4c8edaa7071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db37a30cc9c01c37f6f14ba27c898f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7082c68f1bfd946d8caade98963861.png)
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2020-03-12更新
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820次组卷
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3卷引用:2019届天津市静海县第一中学高三9月学生学业能力调研数学(理)试题
2 . 已知集合
或
,
.若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7274c060fda18844586921d8e1e87d56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6854a314f1bf1d2c5f2f4fe77b48271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2b347b920c705bda7a4905e59b70f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知函数f(x)
的定义域为集合A,不等式mx2﹣5x+2>0的解集是M,且满足2∈M,1∉M的m的取值集合为B,集合C={x|2m﹣1≤x≤m+1}.
(1)求A∪B;
(2)若A∩C=C,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73fffb9b0be5cff9aae8376051484d7.png)
(1)求A∪B;
(2)若A∩C=C,求实数m的取值范围.
您最近一年使用:0次
2019-12-05更新
|
265次组卷
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3卷引用:山东省青岛市第二中学2019-2020学年高一上学期期中数学试题